Are children their parents’ property?

"So when someone feels “icky” when it is suggested that they should be able to genetically engineer their children, a more charitable interpretation would be that their conscience is bearing witness to the truth that all people are free by nature, and therefore to edit someone’s genes and impose one’s will upon the fabric of their being would quite literally be unnatural. Babies are not iPhones. One does not have a right to customize them however one pleases."